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ORDERING TOMMOROW, cant decide! - Page 3

post #21 of 46
Thread Starter 
so you think the nuuo or liberty are best for my application and around a 120 budget?
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post #22 of 46
Thread Starter 
ok after alot of thinkin and research i went with this.... http://www.newegg.com/Product/Produc...82E16817103941

what ya'll think? its reccomended by ati for crossfire set up also
3 18a rails
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post #23 of 46
Looks good to me. I have the Antec TPII and it's rock solid. 3 12V rails sounds good.. 18A each, total 42A on the 12V Rails (you can't add them up!)
    
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post #24 of 46
I'm surprised noone mentioned it, but your total amperage is more important than total wattage.

It's been noted a couple of times now that, especially for the X1900 series, a PSU with a high amperage SINGLE 12v rail is superior to one having multiple weaker rails, even if it has a higher total amperage rating. It's cheaper for a company to split the thermal and electrical load between multiple rails than to do a single high amperage one of high quality components.

I strongly recommend one with a hefty single 12v rail like this one

Brand choice aside (I use a PC Power & Cooling, best in the biz, but MAJOR $$$) check reviews of each particular one that has specs compatable with your rig, and always overestimate your power needs. The PSU is the one place to NEVER skimp. It's the one component capable of destroying your whole rig if it happens to fail the right (wrong) way.
    
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post #25 of 46
You have a point here... However, most dual and triple rail PSU's draw from one single source anyways.. so it does not really matter how the power is supplied in my opinion.

Multiple rails came about because Intel stipulated in ATX12V v2.xx that if Volt x Ampere on a 12V rail was likely to exceed 18A (limit was 20A, with 2A headroom), then a second 12V rail needed to be engineered. Thus, the marked got swamped with those PSUs.

However, Intel unofficially dropped the 240VA standard in spring 2005, actually re-instating single 12V rail PSU's as the standard. As I stated before, in my opinion, there is not too much difference. Witchfire has a valid point that one single heavy rail is likely to be more stable, but any well built PSU should be up to the task.

I hope I am clear enough with this?
    
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post #26 of 46
Thats why i like my OCZ Modstream for the same reason, 1 strong single rail Thats what also makes the Powerstream versions so effective

http://www.newegg.com/Product/Produc...82E16817104155
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post #27 of 46
Thread Starter 
dont you guys feel a combined 52a spread over 3 rails is better then say 30a over one? also dont you feel that effieciency is an important factor when buyin a PSU... with an efficency at a high level.. that means less heat.. less fan more quiet
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post #28 of 46
Why have you listed the liberty? The Noisetaker series is better. Compare the liberty to my PSU (enermax noisetaker)

Enermax Noisetaker

Enermax Liberty

The liberty shows 22a on both rails, but a total of 30 :/

The noisetaker shows 22a on both rails but a total of 35

Maybe that means the max per rail is 22a? I got mine for about £92, which is about $190. I think its great, quiet (i cant hear it over my system atleast) and powerful.

And if your looking for effieciency, the noisetaker is rated at over 80%
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post #29 of 46
Quote:
Originally Posted by noxious89123
Why have you listed the liberty? The Noisetaker series is better. Compare the liberty to my PSU (enermax noisetaker)

Enermax Noisetaker

Enermax Liberty

The liberty shows 22a on both rails, but a total of 30 :/

The noisetaker shows 22a on both rails but a total of 35

Maybe that means the max per rail is 22a? I got mine for about £92, which is about $190. I think its great, quiet (i cant hear it over my system atleast) and powerful.

And if your looking for effieciency, the noisetaker is rated at over 80%
Its hardly fair comparing the 600w Noisetaker to a 500w Liberty.

The specs are actually identical in most ways.
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post #30 of 46
dammit.. i was hoping no1 would notice

EDIT: gorgon2k's link to the liberty doesnt work.

Also after looking at the PSU's he listed, the Noisetaker is more powerful than all of them, and more efficient.

Enermax Liberty 620w

For the extra 20w over the 600w noisetaker, it gains only 1a on the 12v, but loses about 4-6 amps on the 3.3v and 5v

The noisetaker is still better.

The liberty is modular though. But the 620w liberty is $18 more than the 600w noisetaker on newegg. although the liberty 500w is $60 cheaper than the noisetaker 600w.

Noisetaker 600w
Liberty 620w
Liberty 500w
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